| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Manipulation of intrinsic quantum anomalous Hall effect in two-dimensional MoYN2CSCl MXene |
| Yezhu Lv(吕叶竹), Peiji Wang(王培吉), and Changwen Zhang(张昌文)† |
| School of Physics and Technology, Institute of Spintronics, University of Jinan, Jinan 250022, China |
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Abstract Quantum anomalous Hall effect (QAHE) is an innovative topological spintronic phenomenon with dissipationless chiral edge states and attracts rapidly increasing attention. However, it has only been observed in few materials in experiments. Here, according to the first-principles calculations, we report that the MXene MoYN$_{2}$CSCl shows a topologically nontrivial band gap of 37.3~meV, possessing QAHE with a Chern number of $C = 1$, which is induced by band inversion between $ {\rm d}_{xz}$ and ${\rm d}_{yz}$ orbitals. Also, the topological phase transition for the MoYN$_{2}$CSCl can be realized via strain or by turning the magnetization direction. Remarkably, MoYN$_{2}$CSCl shows the nodal-line semimetal state dependent on the electron correlation $U$. Our findings add an experimentally accessible and tunable member to the QAHE family, which stands a chance of enriching the applications in spintronics.
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Received: 11 June 2022
Revised: 13 August 2022
Accepted manuscript online: 16 August 2022
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PACS:
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73.20.At
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(Surface states, band structure, electron density of states)
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73.43.-f
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(Quantum Hall effects)
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73.43.Nq
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(Quantum phase transitions)
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| Fund: Project supported by Taishan Scholar Program of Shandong Province, China (Grant No. ts20190939), Independent Cultivation Program of Innovation Team of Jinan City (Grant No. 2021GXRC043), Shandong Provincial Natural Science Foundation (Grant No. ZR2020QA052), and National Natural Science Foundation of China (Grant Nos. 52173283 and 62071200). |
Corresponding Authors:
Changwen Zhang
E-mail: ss_zhangchw@ujn.edu.cn
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Cite this article:
Yezhu Lv(吕叶竹), Peiji Wang(王培吉), and Changwen Zhang(张昌文) Manipulation of intrinsic quantum anomalous Hall effect in two-dimensional MoYN2CSCl MXene 2022 Chin. Phys. B 31 127303
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